电动汽车用永磁同步电机控制策略研究要点.doc

摘要 资源枯竭和能源短缺随着汽车工业的发展而出现了比较突出的问题，世界各国不得不花费巨大资金去研究新措施去解决汽车工业所带来的种种难题。从技术来讲，开发与利用新能源汽车是工业领域上可行的措施之一。而永磁同步电机具有高效节能、功率因数高；结构简单；调速精度高；效率曲线平直等特点，加上我国稀土资源开发甚优，电动车的永磁同步电机驱动系统应用更为广阔。所以性能高的电机控制系统的最优策略研究是非常重要的。 本文首先分析了电动汽车用永磁同步电机研究的原理以及矢量知识，其中讲述了永磁同步电机的机械特性和磁场分析等。然后对永磁同步电机提出几种优化控制策略，并做出仿真系统图。最后介绍了永磁同步电机的设计方案与测试。 关键词：电动车；永磁同步电机；控制策略；研究 Abstract The depletion of resources and energy shortage with the development of automobile industry and the appear of a more prominent problem. Countries all over the world have to spend huge money to study new measures to solve the problems caused by the automobile industry from a technical perspective, evolution and utilization of new vitality vehicle is one of the feasible of industry field. The permanent magnet synchronous motor with high efficient, work in well speed; constructing a simple; speed is very fast ; efficiency curve and other features of straight, rare earth resources in our country is very excellent . the permanent magnet synchronous motor electric drive system application have good benefit. So the optimal strategies for motor control system with high performance is very important. This paper firstly studies the electric vehicle permanent magnet synchronous motor and the theory analysis, which describes the permanent magnet synchronous motor mechanical properties and magnetic field analysis. Then the permanent magnet synchronous motor and to explain several optimization control strategy and make the simulation system. Finally introduces the design and experiment of permanent magnet synchronous motor. Keywords ： electric vehicles; permanent magnet synchronous motor; control strategy; study 目录 摘要 i Abstract ii 1 绪论 1 1.1 课题背景及研究的目的和意义 1 1.2 国内外研究概况及其发展 1 1.2.1电动汽车概述 1 1.2.2电动汽车的发展现状 1 1.3电动汽车用永磁同步电动机的应用与研究 2 1.4本章小结 3 2 电动汽车用永磁同步电机研究的原理及矢量分析 4 2.1永磁同步电机的构造和机械特性 4 2.1.1永磁同步电动机的结构 4 2.1.2永磁同步电机的机械特性 5 2.2永磁同步电机的原理与磁场分析 5 2.2.1永磁同步电机的原理 5 2.2.2永磁同步电机与磁场的关系 5 2.3永磁同步电机的数学模型 6 2.4 永磁同步电机的矢量分析 7 2.4.1 矢量坐标变换原理 7 2.5本